| Message ID | 20230408114624.824144-1-risca@dalakolonin.se (mailing list archive) |
|---|---|
| Headers | show |
| Series | iio: adc: palmas_gpadc: add iio events | expand |
Please dis-regard this. I sent the wrong version :/ On Sat, Apr 08, 2023 at 01:46:17PM +0200, Patrik Dahlström wrote: > This series is based on linux-next/master [1] and [2]. > > The palmas gpadc block has support for monitoring up to 2 ADC channels > and issue an interrupt if they reach past a set threshold. This can be > configured statically with device tree today, but it only gets enabled > when reaching sleep mode. Also, it doesn't look like anyone is using it. > > Instead of this one special case, change the code so userspace can > configure the ADC channels to their own needs through the iio events > subsystem. The high and low threshold values can be set for every > channel, but only 2 thresholds can be enabled at a time. Trying to > enable more than 2 thresholds will result in an error. > > The configured thresholds will wake up the system from sleep mode if > wakeup is enabled in /sys/devices/.../power/wakeup. > > The old platform data was removed. > > Thresholds, events, and wakeup were tested on omap5-uevm board. It wakes > up from sleep mode when wakeup is enabled and a threshold is passed. A > userspace tool for monitoring events and adjusting thresholds can be > found at [3]. > > V2 -> V3: > * Rebased to linux-next. > * Avoid reconfiguring events on error and when old == new value. > V1 -> V2: > * Begin by removing adc_wakeupX_data instead of doing it last. > * Split changes in smaller patches > > [1] git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > [2] https://lore.kernel.org/linux-iio/20230318163039.56115-1-jic23@kernel.org/ > [3] https://github.com/Risca/pyra_vol_mon > > Patrik Dahlström (7): > iio: adc: palmas: remove adc_wakeupX_data > iio: adc: palmas: replace "wakeup" with "event" > iio: adc: palmas: use iio_event_direction for threshold polarity > iio: adc: palmas: move eventX_enable into palmas_adc_event > iio: adc: palmas: always reset events on unload > iio: adc: palmas: add support for iio threshold events > iio: adc: palmas: don't alter event config on suspend/resume > > drivers/iio/adc/palmas_gpadc.c | 559 +++++++++++++++++++++++++++------ > include/linux/mfd/palmas.h | 8 - > 2 files changed, 464 insertions(+), 103 deletions(-) > > > base-commit: 8417c8f5007bf4567ccffda850a3157c7d905f67 > prerequisite-patch-id: b0418c707db13f514400956596e9ebe91c25bba0 > -- > 2.25.1 >